Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must carry behavioral disclosure. It usefully reveals that the tool returns links to the board's page rather than hosted PDFs and gives the copyright rationale. However, it does not mention the read-only nature, output format, or any failure or availability behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is one front-loaded sentence with a relevant parenthetical explanation; there is no redundant wording. It could be improved by defining 'spec' more explicitly, but as written it is compact and readable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with no annotations, no output schema, and three unconstrained string parameters, the description is too sparse. It leaves the return shape, valid parameter values, and the boundary against the sibling tools unstated, so an agent may invoke it incorrectly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% and the description adds no meaning to board, level, or subject. There are no accepted values, value formats, or relationships between the parameters, so an agent cannot reliably know what strings to supply.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific deliverable: official past-paper archive links pointing to the board's own assessment-resources page. It is clear about the resource and the no-PDF-hosting constraint, though it does not explicitly distinguish itself from the sibling tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no guidance on when to use this tool instead of exam_spec_lookup or exam_topic_paper. 'Per spec' hints at the input context but does not state use cases, exclusions, or prerequisites.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.